Sun	Mon	Tue	Wed	Thu	Fri	Sat
23	24	25	26	27	28	1
2	3	4	5	6	7	8
9	10	11	12	13	14	15
16	17	18	19	20	21	22
23	24	25	26	27	28	29
30	31	1	2	3	4	5

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Multiple Choice Questions

Ratio between time taken to cover same distance in upstream to downstream is 5 3 If speed of stream ...........

Quantitative Aptitude(IBPS RRB CL) Boats and Streams

Ratio between time taken to cover same distance in upstream to downstream is 5 : 3. If speed of stream is 4 km/hr then find time taken to cover

96km in upstream?

This questions was previously asked in

RRB Clerk Prelims (14 Aug, 2022 Shift 1)

View All RRBB Previous Year Papers

8 hours

6 hours

16 hours

12 hours

15 hours

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Explanation:

8 hours

- The ratio of time taken to travel the same distance upstream and downstream is 5:3.
- This means that upstream takes more time due to the opposing current.
- Speed of the stream is given as 4 km/hr.
- To find upstream time, let the speed of the boat in still water be 'b' km/hr.
- Upstream speed = (b - 4) km/hr and downstream speed = (b + 4) km/hr.
- According to the ratio 5/3 = (96/(b-4)) / (96/(b+4)).
- Simplifying gives b = 16 km/hr.
- Thus, upstream speed is 12 km/hr.
- Time = Distance/Speed = 96 km / 12 km/hr = 8 hours.

- **Option 1: 8 hours** ✅

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